Indoor Unit - mundoclima MVD AC2 CL23500 Manual De Instalación Y Usuario

Refer to Tables 6.1 and 6.2 for the specifications of the power cord
and communication wire. A wiring capacity that is too small will
cause the electrical wiring to become too hot, and lead to accidents
when the unit burns and becomes damaged.
Table 6.1
Model
Phase
Power
supply
Volt and frequency
Communication wire between
indoor and outdoor units
Communication wire between
indoor unit and wired controller
Field fuses
* Please refer to the corresponding wired controller manual for the wired
controller wiring.
Table 6.2 Indoor units electrical characteristics
Capacity
Hz Volts
2.2kW 50 220-240
2.8kW 50 220-240
3.6kW 50 220-240
4.5kW 50 220-240
5.6kW 50 220-240
7.1kW 50 220-240
8.0kW 50 220-240
9.0kW 50 220-240
Abbreviations:
MCA: Minimum Circuit Amps
MFA: Maximum Fuse Amps
IFM: Indoor Fan Motor
kW: Rated motor output
FLA: Full Load Amps
1. Select the wire diameters (minimum value) individually for each
unit based on the Table 6.3, where the rated current in Table 6.3
means MCA in Table 6.2.
2. Maximum allowable voltage range variation between phases is
2%.
3. Select circuit breaker that having a contact separation in all poles
not less than 3 mm providing full disconnection，where MFA is
used to select the current circuit breakers and residual current
operation breakers:
Table 6.3
Nominal cross-sectional area (mm
Rated current
of appliance（A）
Flexible cords
”3 0.5
>3 and ”6 0.75
>6 and ”10 1
>10 and ”16 1.5
>16 and ”25 2.5
>25 and ”32 4
>32 and ”50 6
>50 and ”63 10
Warning
Refer to local laws and regulations when deciding on the
dimensions for the power cords and wiring. Get a professional to
select and install the wiring.
2.2~9.0kW
1-phase
220-240V~50Hz
Shielded 3*AWG16-AWG18
Shielded AWG16-AWG20
*
15A
IFM
Power supply
MCA MFA kW FLA
0.02 0.2
0.32 15
0.02 0.2
0.32 15
0.02 0.23
0.45 15
0.045 0.35
0.47 15
0.045 0.4
15
0.58
0.05 0.45
0.90 15
0.05 0.45
0.90 15
0.05 0.52
1.1 15
2
Cable for fixed wiring
1 to
and 0.75
1 to
and 1
1 to
and 1.5
1.5 to
and 2.5
and 4
2.5 to
and 6
4 to
and 10
6 to
and 16 10 to
6.3 Communication Wiring
Use only shielded wires for the communication wiring. Any other
type of wires may produce a signal interference that will cause the
units to malfunction.
Do not carry out electrical works like welding with the power on.
Do not bind the refrigerant piping, power cords and communication
wiring together. When the power cord and communication wiring
are parallel, the distance between the two lines must be 300 mm or
more in order to prevent signal source interference.
Communication wiring must not form a closed loop.
6.3.1 Communication wiring between the indoor and outdoor units
The indoor and outdoor units communicate via the RS485 serial port.
The communication wiring between the indoor and outdoor units should
be connected one unit after another in a daisy chain from the outdoor
unit to the final indoor unit.And the shielded layer must be properly
grounded, and a build-out resistor must be added to the last indoor unit
to enhance the stability of the communication system (see Figure 6.7).
Incorrect wiring such as a star connection or a closed ring will cause
instability of the communication system and system control anomalies.
Use a three core shielded wire (greater than or equal to 0.75 mm
for the communication wiring between the indoor and outdoor units.
Make sure the wiring is connected correctly. The connecting lead for
this communication wire must come from the master outdoor unit.
All shielded wiring in the network are interconnected, and will
eventually connect to earth at the same point " " .
Outdoor
unit
(P Q E)
(P Q E)
Indoor and
outdoor units
Communication wire
Only the last indoor unit requires adding
P
the build-out resistor at P and Q.
Q
(open)
6.3.2 Communication wiring between the indoor unit and wired
controller(wired controller is optional for this unit)
The wired controller and the indoor unit can be connected in different
manners, depending on the forms of communication.
1)For a bidirectional communication mode:
Use 1 wired controller to control 1 indoor unit
or 2 wired controllers (one master and one slave controller) to control
)
1 indoor unit (see Figure 6.8);
2.5
2.5
2.5
4

Indoor unit 1

6
10
16
25
Wired controller 1
Master wired controller
25
(Connect the shielded end of the shielded wire to the
electronic controller box sheet metal "
Signalling line
between outdoor units
Connecting the shielded
layer of the shielded wire
Figure 6.7
(2.2~3.6kW )
(4.5~9.0kW )
Wired controller 2
Slave wired controller
Figure 6.8
2
)
" here)